20548480 has 64 divisors (see below), whose sum is σ = 49780080. Its totient is φ = 8110080.

The previous prime is 20548459. The next prime is 20548487. The reversal of 20548480 is 8484502.

It is a tau number, because it is divible by the number of its divisors (64).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20548487) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 61915 + ... + 62245.

Almost surely, 2^20548480 is an apocalyptic number.

20548480 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20548480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24890040).

20548480 is an abundant number, since it is smaller than the sum of its proper divisors (29231600).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20548480 is an equidigital number, since it uses as much as digits as its factorization.

20548480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 447 (or 435 counting only the distinct ones).

The product of its (nonzero) digits is 10240, while the sum is 31.

The square root of 20548480 is about 4533.0431279660. The cubic root of 20548480 is about 273.9007579213.

The spelling of 20548480 in words is "twenty million, five hundred forty-eight thousand, four hundred eighty".